Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 122 insertions, 0 deletions

diff --git a/man/systemd.slice.xml b/man/systemd.slice.xml
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+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
+
+<refentry id="systemd.slice">
+  <refentryinfo>
+    <title>systemd.slice</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd.slice</refentrytitle>
+    <manvolnum>5</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd.slice</refname>
+    <refpurpose>Slice unit configuration</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename><replaceable>slice</replaceable>.slice</filename></para>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para>A unit configuration file whose name ends in <literal>.slice</literal> encodes information about a slice
+    unit. A slice unit is a concept for hierarchically managing resources of a group of processes. This management is
+    performed by creating a node in the Linux Control Group (cgroup) tree. Units that manage processes (primarily scope
+    and service units) may be assigned to a specific slice. For each slice, certain resource limits may be set that
+    apply to all processes of all units contained in that slice. Slices are organized hierarchically in a tree. The
+    name of the slice encodes the location in the tree. The name consists of a dash-separated series of names, which
+    describes the path to the slice from the root slice. The root slice is named <filename>-.slice</filename>. Example:
+    <filename>foo-bar.slice</filename> is a slice that is located within <filename>foo.slice</filename>, which in turn
+    is located in the root slice <filename>-.slice</filename>.
+    </para>
+
+    <para>Note that slice units cannot be templated, nor is possible to add multiple names to a slice unit by creating
+    additional symlinks to its unit file.</para>
+
+    <para>By default, service and scope units are placed in
+    <filename>system.slice</filename>, virtual machines and containers
+    registered with
+    <citerefentry><refentrytitle>systemd-machined</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+    are found in <filename>machine.slice</filename>, and user sessions
+    handled by
+    <citerefentry><refentrytitle>systemd-logind</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+    in <filename>user.slice</filename>. See
+    <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+    for more information.</para>
+
+    <para>See
+    <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+    for the common options of all unit configuration
+    files. The common configuration items are configured
+    in the generic [Unit] and [Install] sections. The
+    slice specific configuration options are configured in
+    the [Slice] section. Currently, only generic resource control settings
+    as described in
+    <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry> are allowed.
+    </para>
+
+    <para>See the <ulink
+    url="https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface">New
+    Control Group Interfaces</ulink> for an introduction on how to make
+    use of slice units from programs.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Automatic Dependencies</title>
+
+    <refsect2>
+      <title>Implicit Dependencies</title>
+
+      <para>The following dependencies are implicitly added:</para>
+
+      <itemizedlist>
+        <listitem><para>Slice units automatically gain dependencies of type
+        <varname>After=</varname> and <varname>Requires=</varname> on
+        their immediate parent slice unit.</para></listitem>
+      </itemizedlist>
+    </refsect2>
+
+    <refsect2>
+      <title>Default Dependencies</title>
+
+      <para>The following dependencies are added unless <varname>DefaultDependencies=no</varname> is set:</para>
+
+      <itemizedlist>
+        <listitem><para>Slice units will automatically have dependencies of type <varname>Conflicts=</varname> and
+        <varname>Before=</varname> on
+        <filename>shutdown.target</filename>. These ensure that slice units are removed prior to system shutdown.
+        Only slice units involved with late system shutdown should disable
+        <varname>DefaultDependencies=</varname> option.</para></listitem>
+      </itemizedlist>
+    </refsect2>
+  </refsect1>
+
+  <refsect1>
+    <title>Options</title>
+
+    <para>Slice unit files may include [Unit] and [Install] sections, which are described in
+    <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+    No options specific to this file type are supported.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+</refentry>